Question

Q. 1) Find number of moles present in 108 gram liter water. Give a perfect ans. Of 108g how it need Explatiion to. ​

Answer 1

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• 6 moles

Explanation :

• Mole works as a fundamental unit which can be understood as: if we have 1 mole of water, we mean that many particles of water molecules which can make their mass equal to their molecular mass(mass of 2 x H + O).

Formula for moles is already defined,

• Mole = given mass/molecular mass

• Molecular mass of water = 2 x H + O = 2(1) + 16 = 18

So, here,

• Mole = given mass/mol. mass of H2O

$: \pink \implies \sf 108/18$

$: \pink \implies \sf \boxed { \sf 6}$

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Answer 2

Since each ml of water weights 1 g, 0.1 liters of water = 100 grams. As well, "kilo" means "thousand". So 1 kilogram (kg) = 1000 grams. This means 100 g = 0.1 kg